/* 基础样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #f5e9d8, #c7e9b0);
        color: #333;
        line-height: 1.6;
    }

    h1, h2, h3, h4 {
        font-family: 'Playfair Display', serif;
        color: #2e7d32;
    }

    h1 {
        font-size: 36px;
        text-align: center;
        margin-top: 20px;
        color: #388e3c;
    }

    h2 {
        font-size: 28px;
        margin-top: 40px;
        color: #43a047;
    }

    h3 {
        font-size: 22px;
        margin-top: 30px;
        color: #66bb6a;
    }

    p {
        font-size: 16px;
        margin: 15px 0;
    }

    a {
        color: #ff8a00;
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }

    /* 导航栏样式 */
    .navbar {
        display: flex;
        justify-content: center;
        background: rgba(255, 255, 255, 0.8);
        padding: 15px 0;
        position: sticky;
        top: 0;
        z-index: 1000;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    .navbar a {
        margin: 0 15px;
        font-size: 18px;
        color: #555;
        transition: color 0.3s ease;
    }

    .navbar a:hover {
        color: #ff8a00;
    }

    /* 主视觉区 */
    .hero {
        position: relative;
        height: 60vh;
        background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center/cover;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }

    .hero h1 {
        font-size: 48px;
        animation: fadeIn 2s ease-in-out;
    }

    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    /* 内容区 */
    .content {
        padding: 40px 20px;
        max-width: 1200px;
        margin: auto;
    }

    .content section {
        margin-bottom: 50px;
    }

    .content img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 10px;
        margin: 20px 0;
    }

    /* 卡片式布局 */
    .cards {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
    }

    .card {
        background: #ffffff;
        border-radius: 15px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        padding: 20px;
        width: calc(33.33% - 20px);
        transition: transform 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
    }

    .card img {
        width: 100%;
        border-radius: 10px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .card {
            width: calc(33.33% - 20px);
        }
    }

    @media (max-width: 1200px) {
        .card {
            width: calc(50% - 20px);
        }
    }

    @media (max-width: 768px) {
        .cards {
            flex-direction: column;
            align-items: center;
        }
        .card {
            width: 80%;
        }
        .hero h1 {
            font-size: 36px;
        }
    }

    @media (max-width: 480px) {
        .card {
            width: 100%;
        }
        h1 {
            font-size: 28px;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 24px;
        }
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        background: #ffbe64;
        color: white;
        padding: 10px 20px;
        border-radius: 5px;
        transition: background-color 0.3s ease;
        position: relative;
        overflow: hidden;
    }

    .btn:hover {
        background: #ff8a00;
    }

    .btn::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background: rgba(255, 255, 255, 0.5);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        transition: width 0.5s ease, height 0.5s ease;
    }

    .btn:hover::after {
        width: 200%;
        height: 200%;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    table, th, td {
        border: 1px solid #ddd;
    }

    th, td {
        padding: 12px;
        text-align: left;
    }

    th {
        background-color: #f2f2f2;
    }

    /* 代码块样式 */
    pre {
        background: #f5f5f5;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #d6336c;
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% { background: radial-gradient(circle, rgb(255, 87, 34), transparent); }
        50% { background: radial-gradient(circle, rgb(34, 87, 255), transparent); }
        100% { background: radial-gradient(circle, rgb(255, 87, 34), transparent); }
    }

    .animated-background {
        animation: aurora-move 15s linear infinite;
    }

    /* 提示文本样式 */
    .reference {
        text-align: center;
        font-size: 18px;
        color: #555;
        margin: 30px 0;
    }